Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) ÅKERSTEDT Torbjörn and KECKLUND Göran,The Future of Work Hours-the European View,Industrial Health,00198366,National Institute of Occupational Safety and Health,2005,43,1,80-84,https://cir.nii.ac.jp/crid/1390282679255759744,https://doi.org/10.2486/indhealth.43.80